🌐EnglishEnglishEspañolFrançaisPortuguêsРусскийفارسی中文日本語EntityQ3271879· pop 8· linked from 86 articlescircular symmetrytype of continuous symmetry for a planar object that can be rotated by any arbitrary angle and map onto itselfConnectionsorthogonal groupEntitygeometryEntityCategoriesRotationSymmetry